Google Cloud Platform Source

Log data for Google Cloud Platform (GCP) services is collected and exposed through the Google Cloud Stackdriver service. You can export, in real time, the data collected by Stackdriver to Google Cloud Pub/Sub. We use this Pub/Sub integration to push logs to the Sumo service in real time.

Configure a Google Cloud Platform Source

You can use the same GCP Source to receive log data from multiple GCP services. For example, you can send logs collected from Google Cloud Application Engine, Google Cloud IAM, and Google Cloud Audit.

However, this is not recommended since you cannot define specific Source Category values to each GCP service. If you create a GCP Source for each service you can define a specific Source Category to each service.

In this section, you add the Source URL as an allowed domain to your GCP account. This Source will be a Google Pub/Sub-only Source, which means that it will only be usable for log data formatted as data coming from Google Pub/Sub.

In Sumo Logic select Manage Data > Collection > Collection.

Select an existing Hosted Collector upon which to add the Source. If you don't already have a Collector you'd like to use, create one, using the instructions on Configure a Hosted Collector.

Click Add Source next to the HostedCollector and click Google Cloud Platform.

Enter a Name to display for the source in the Sumo web application. Description is optional.

(Optional) For Source Host and Source Category, enter any string to tag the output collected from the source. Category metadata is stored in a searchable field called _sourceCategory, for example "gcp".

Log File Discovery. To set up the subscription you need to get an endpoint URL from Sumo to provide to Google. Click on Copy URL and use the provided URL as an allowed domain in GCP.Due to caching optimizations, do not make any requests to this URL before completing the following steps.
Steps to add the Source's URL as an allowed domain in GCP:

In the Configure webhook notifications for … dialog, add the Source URL as valid domain and click Add Domain.

Click Take Me There to verify ownership of the URL at Google’s webmaster central page. You are taken to the Google’s Webmaster Central interface to verify the URL.

Click Add Property in the Webmaster Central site and add the Source URL.

Do not click Verify yet.
In Google, shown in the following screenshot, you only need to complete step 1, Download and open the HTML verification file. Complete the next steps, 7-10, in Sumo Logic before clicking Verify. You will verify in step 11.

Return to the Source configuration page in Sumo under Log File Discovery.

For Verification File Name, enter the verification file name.

For Verification File Contents, copy and paste the full string from the verification file's body contents.
Continue configuring the Source in Sumo.

Advanced Options for Logs.

Enable Timestamp Parsing. This option is selected by default. If it's deselected, no timestamp information is parsed at all.

Time Zone. There are two options for Time Zone. You can use the time zone present in your log files, and then choose an option in case time zone information is missing from a log message. Or, you can have Sumo Logic completely disregard any time zone information present in logs by forcing a time zone. It's very important to have the proper time zone set, no matter which option you choose. If the time zone of logs can't be determined, Sumo Logic assigns logs UTC; if the rest of your logs are from another time zone your search results will be affected.

Processing Rules for Logs. Configure desired filters—such as include, exclude, hash, or mask—as described in Create a Processing Rule. Processing rules are applied to log data, but not to metric data. Note that while the Sumo service will receive your data, data ingestion will be performed in accordance with the regular expressions you specify in processing rules.

When you are finished configuring the Source click Save.

Return to Google's Webmaster Central and click Verify. It should verify successfully.

Finally, in your GCP console return to Products and services > APIs & Services > Credentials and add the Sumo Logic endpoint URL that you just verified to have the endpoint show up as a verified domain in GCP.

Configure a Pub/Sub topic for GCP projects

In this step, you configure a Pub/Sub topic in GCP and add a subscription to the above source URL. Once you configure the Pub/Sub, you can export data from Stackdriver to the Pub/Sub. For example, you can export Google App Engine logs, as described on Collect Logs for Google App Engine.

In GCP, select Pub/Sub in the left navigation pane.

In the Pub/Sub pane,select Topics, then click Create Topic in the Topics pane.

Name the topic and click Create.

Select the new topic in the Topics pane, and select New subscription from the options menu.

In the Create a subscription pane:

Subscription Name. Enter a name for the subscription.

Delivery Type. Choose “Push into an endpoint url”, and enter the upload URL for the Sumo HTTP source you created above.
To determine the URL for the HTTP source, navigate to the source on the Collection page in the Sumo web appand click Show URL.